DC braking, Off | Toshiba VF-nC1 manual

E6581090

6.6DC braking

6.6.1DC braking

H

H

H

:DC braking starting frequency (Hz)

:DC braking current (%)

:DC braking time (s)

• Function

Large braking torque can be obtained by applying a direct current to the motor. These parameters are used to set the direct current to be applied to the motor, the application time and the starting frequency.

[Parameter setting]						6
	Title	Function	Adjustment range	Default setting		6

	H	DC braking starting frequency	0.0:(OFF),	0.0
	H	(Hz)	0.1～HJ(Hz)	0.0
		(Hz)	0.1～HJ(Hz)
	H	DC braking current (%)	0～100(%)	50.0
	H	DC braking time (s)	0.0:(OFF)	1.0
	H	DC braking time (s)	0.1～20.0(sec)	1.0
			0.1～20.0(sec)
	Output frequency [Hz]

Set frequency

DC braking stop

DC braking starting frequency H

0	Time [sec]
Output current [A]	Time [sec]
Output current [A]
		DC braking current	H
0
	DC braking time	H

Operation signal [F-CC]

ON

OFF

Note: During DC braking, the overload protection sensitivity of the motor increases. To prevent tripping, the DC braking current is adjusted automatically in some cases.

F-11

Image 75

Toshiba VF-nC1 instruction manual DC braking, Off

Contents

Industrial Inverter Limits in purpose Safety precautions General operation Wiring Transportation ‚ Installation Operations When retry function is selected inverter Attach warning labels ― Contents ― 10.1 Contents of the product code Read firstCheck purchased product Operation keypad panel Name and function of each part Front panel Self-up terminal block VFNC1-2001P～2007P VFNC1-2015P～2022P VFNC1S-1007P VFNC1S-2015P～2022P Same type of terminal board is provided for all models Control circuit terminal block Motors Inverters Effects of leakage current across ground DisposalWhat to do about leak current Leakage current from the inverter main unit Remedies Affects of leakage current across lines Examples of unapplicable chemicals and solvents Installation Installation environment Resistor Installation location How to install VFNC1 VFNC1S Installing more than one unit in a cabinet Connection Preventing radio noise Control and main power supplyWiring Standard connections VF-nC1 Standard connection diagram When using V1/S3 terminal as a logic input terminal H DC reactor ＊ DCL option P0 ＊4 DC reactor＊5 Connections with peripheral equipment Power supply and motor connectionsDescription of terminals Main circuit terminals VI/S3 Control circuit terminals sink logic common CC FLB Sink logic negative common/source logic positive commonOUT FLA Switching the input terminal logic between sink and source Simple operation Frequency SettingSimple operation of the VF-nC1 Run / stop Short F and CC terminals run forward RUN Motor starts Motor stops slowdown stop Setting the frequency using external potentiometer Setting the frequency using the operation panel Hoqf Setting the frequency by serial communications Hoqf Setting the frequency using input voltageSetting the frequency using current input 4-20mA Basic VF-nC1 operations Setup parameters How to set parameters KP KV How to set a setup parameter Steps in key entry for basic parameters How to set the basic parameters Steps in key entry for extended parameters How to set extended parameters CWH HTH GPF Press the Enter key to display the setting of the parameter CEE ITW Parameters that cannot be changed while running Kpkv Returning all parameters to standard default setting Settings Selecting an operation modeCommand mode selection Frequency setting mode selection Function Meter setting and adjustment Houn Adjustment scale with meter adjustment HO parameterAdjusting the meter in inverter stop state FM/OUT Standard default setting CEE Acceleration time 1 s FGE Deceleration time 1 s Setting acceleration/deceleration timeSelecting forward and reverse runs operation panel only HT Forward/reverse selection Operation panel HJ Maximum frequency Hz Parameter settingMaximum frequency Upper limit and lower limit frequencies Selecting control mode Base frequencyXN Base frequency 1 Hz XD Setting the electronic thermal Setting of motor electronic thermal protection level 1 VJTExplanation of terms Using a VF motor motor for use with inverter Inverter over load characteristicsSetting the motor electronic thermal protection level 1 VJT Motor 150%-overload time limit H Preset speed operation speeds in 15 stepsSetting method Run/stop Preset speed frequency setting Eoqf Using other speed commands with preset speed command FM/OUT terminal functions selection Output signal-related parametersOutput terminal setting Extended parameters OFF Parameter for specifying a frequency Parameters related to terminal function selection Connection method Setting of contact input terminal function Jog run Switching between control logics Sink/Source selection Setting of output terminal functions OFF Setting of switching terminalsBasic parameters 40MCHG Setting frequency command characteristics Analog signals for frequency setting Adjustment of 0~10Vdc voltage input Adjustment of 4~20mAdc current input 0 voltage input Operation frequency Starting frequency Starting frequency setting Hz DC braking Jump frequency Hz Jump width Hz Preset speed operation frequencies 8 to ～ H Preset speed operation frequencies 8 to 15 Hz PWM carrier frequency During restart operation, the message TVT is displayed Trip-less intensification Application to a crane or hoist Start of motor during coasting Motor speed search function Inverter, motor and machine ・GTT ・QEC・QEN ・GRJQ Types of PI control interfaces Setting the PI control parameterPerforming PI control External connection Adjusting an analog command voltage Adjusting the PI control gain level Optimizing control characteristics Improving torque and speed characteristics Acceleration/deceleration 2 switching frequencySwitching between acceleration and deceleration Protection functions Current stall setting Stall prevention level External trip stop by means of a terminal ①Press the Stop key Gqhh will blink Emergency stop by means of the operation panel Function FM/OUT terminal selection 1 12 OT over-torque detection Undervoltage trip Under voltage trip selection Analog input disconnection detection Setting methodsCanceling the setting Operation panel parameters Communication function common serial Changing the standard monitoring item Selection of monitor display selection Communications parameters Common serial options 16.1 Using RS232C/RS485 conversion unitsSetting up the communications function Data transmission specifications Free notes Free notes Variety of operation Setting the operation frequency RSS4 Setting the operation mode Status monitor mode Setting procedure eg. operation at 60HzMonitoring the operation status Key to change items displayed in the status monitor mode Display of trip information Example of call-up of trip information ⇔ EMC directive 89/336/EEC Taking measures to satisfy the CE / UL / CSACompliance with CE Marking Abstract Compliance with EMC directive Model, noise filter inside 【Ex. Countermeasure main circuit wiring】 EMFAS2011Z Models without EMI filtersEMFA2006Z EMFA2015Z 【Operating with external signals】【Apply if needed】【Accessories for countermeasure】 Compliance with Connection Compliance with InstallationCompliance with UL Standard and CSA Standard Compliance with Low voltage directive AIC Motor thermal protection Peripheral devices Selection of wiring materials and devices THR Selection of wiring devices Magnetic contactor in the secondary circuit Installation of a magnetic contactorInstallation of an overload relay Magnetic contactor in the primary circuit NN－WN Table of parameters and data11.1 User parameters 11.2 Basic parameters NNWN VJTQNO UT Extended parameters Input/output parametersLOW NN-WN Frequency parameters Torque boost parameters Operation mode parameters Protection parameters Acceleration/deceleration time parameters Factory setting parameter Operation panel parametersCommunication parameters Default settings by inverter rating Table of input terminal functions +SS4+AD2 +SS1+AD2+SS2+AD2 +SS3+AD2 Table of output terminal functions Order of precedence of combined functions Specifications Models and their standard specificationsStandard specifications Self-cooling Forced LED External dimensions/weights External dimensions/weightsExternal dimensions Trip causes/warnings and remedies CEE QERFGE QER GRJ GRJ TVT CPUQHH Oqhh Uvqr UQUK Restoring the inverter from a trip YES If the motor does not run while no trip message is displayed How to determine the causes of other problems Inspection and maintenance Regular inspectionCheck points Check items Periodical inspection Standard replacement cycles of principal parts Replacement of expendable parts Keeping the inverter in storage Making a call for servicing Warranty Disposal of the inverter 2004-10